1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alexandra [31]
3 years ago
12

james swims at a speed of 2 m/s when she notices a shark is behind her and accelerates so that she is skimming at 4 m/s. if her

average acceleration is 1.2 m/s how long did it take for james to speed up
Physics
1 answer:
Veronika [31]3 years ago
3 0

Answer:

Time= t= 1.67 secs

Explanation:

Time= t=?= 1.67 secs

Initial Velocity= Vi = 2m/s

Final  Velocity= Vf  = 4m/s

Average Acceleration= av= Vf-Vi/t

Putting the values : 1.2m/s²= 4-2/t

Rearranging:          t= 2/1.2= 1.67 secs

You might be interested in
What is magnetism? explaination​
suter [353]

Answer:

Magnetism is the force exerted by magnets when they attract or repel each other.

6 0
2 years ago
Read 2 more answers
The position of a certain airplane during takeoff is given by x=1/2 *bt2, where b = 2.0 m/s2 and t = 0 corresponds to the instan
Serhud [2]

Answer:

1362000 kgm/s

Explanation:

So the total mass combination of the plane and the people inside it is

M = 35000 + 160*65 = 45400 kg

After 15 seconds at an acceleration of 2 m/s2, the plane speed would be

V = 2*15 = 30 m/s

So the magnitude of the plane 15s after brakes are released is

MV = 45400 * 30 = 1362000 kgm/s

5 0
3 years ago
1. The matter a wave travels through is called a
Luba_88 [7]
It is called a medium
3 0
3 years ago
To avoid breakdown of the capacitors, the maximum potential difference to which any of them can be individually charged is 125 V
aleksley [76]

Answer:

The maximum energy stored in the combination is 0.0466Joules

Explanation:

The question is incomplete. Here is the complete question.

Three capacitors C1-11.7 μF, C2 21.0 μF, and C3 = 28.8 μF are connected in series. To avoid breakdown of the capacitors, the maximum potential difference to which any of them can be individually charged is 125 V. Determine the maximum energy stored in the series combination.

Energy stored in a capacitor is expressed as E = 1/2CtV² where

Ct is the total effective capacitance

V is the supply voltage

Since the capacitors are connected in series.

1/Ct = 1/C1+1/C2+1/C3

Given C1 = 11.7 μF, C2 = 21.0 μF, and C3 = 28.8 μF

1/Ct = 1/11.7 + 1/21.0 + 1/28.8

1/Ct = 0.0855+0.0476+0.0347

1/Ct = 0.1678

Ct = 1/0.1678

Ct = 5.96μF

Ct = 5.96×10^-6F

Since V = 125V

E = 1/2(5.96×10^-6)(125)²

E = 0.0466Joules

8 0
3 years ago
hink about the friction activity. Return to this activity to see it again if you need to. Explain what happened in each of the t
ankoles [38]
<span>from what i know the force of gravity and its effects on objects, regardless of their mass, fall to the ground at the same rate.</span>
7 0
3 years ago
Other questions:
  • In which of the following situations does gravity supply a centripetal force?
    15·1 answer
  • How is our planets giant,thermohaline system of warm and cold water like a massive convection current
    5·1 answer
  • What is the bending of a wave around a barrier?
    5·1 answer
  • A quarterback claims that he can throw the football a horizontal distance of 167 m. Furthermore, he claims that he can do this b
    14·1 answer
  • What is the relationship between the frequency and the pitch of a sound?
    14·2 answers
  • The section of the small intestine between the duodenum and ilium?
    10·2 answers
  • The shortest wavelengths that we can see are experienced as ______ colors.
    6·1 answer
  • A car traveling at 45 km/h starts to brake, and comes to a stop over a distance of 18 m. Calculate the acceleration
    12·1 answer
  • Incident beam<br> Which order is the brightest?
    13·1 answer
  • Explain 4 factors affecting centripetal acceleration​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!